If you are under 13 years old (or below the cutoff age for requiring parental consent in your country), you will need a parent or guardian to provide their permission for you to take the test.
Your parent or legal guardian can chat with our support team or email englishtest-support@duolingo.com to give their permission. Their message should include your full name and the email address that you will be using for your Duolingo English Test account.